Bmw 335i makes weird electrical buzzing static noise

Josegut303 · 03-07-2019, 01:59 PM

When i sit in my 335i after turning it off and locking the door about 2 minutes later i hear a strange buzzing staticy humming sound coming from the dash or around there also it 2 minutes after that tbe car sounds like it locks but i never press any buttons it does it on it's own. It makes the lock noise but the car stays locked

b92 · 03-07-2019, 02:12 PM

Sounds like the fuel pump, which is normal. Is it the same as the sound the car makes when you press the unlock button on your key fob?

Brandoch · 03-07-2019, 03:54 PM

Its probably the ventilation motors resetting. Mines makes the same sound. It sounds like a semi truck horn about a block away.

Josegut303 · 03-07-2019, 06:17 PM

Yes same sound but it does it on it's own

Brandoch · 03-07-2019, 06:32 PM

Yep, it does it on it's own. I believe its resetting to be ready for the next ignition cycle.

mxchris727 · 03-07-2019, 07:23 PM

Is does it sound like my (still occurring) issue?

https://www.e90post.com/forums/showthread.php?t=1348547

Dabrwright · 03-07-2019, 07:38 PM

Quote:

Originally Posted by Josegut303

When i sit in my 335i after turning it off and locking the door about 2 minutes later i hear a strange buzzing staticy humming sound coming from the dash or around there also it 2 minutes after that tbe car sounds like it locks but i never press any buttons it does it on it's own. It makes the lock noise but the car stays locked

I get the same noise and I am wondering what it is as it is getting slightly louder
When I get into the car but do not start
the car I get this buzzing sound from behind the instrument cluster. It is NOT the sound of the fuel pump.
It lasts for about 2 - 4 mins and then stops and starts again after a few minutes
It sounds like a small motor buzz
I do not get any locking sounds

Anyone got any ideas?

e90yyc · 03-07-2019, 11:26 PM

If it’s the flaps moving in the HVAC system, they shouldn’t be making noise for two minutes. It’s normal for them to adjust shortly after you have shut off/locked your car, but that should last only about 20-30 seconds tops.

Not following what you’re referring to about the locking sounds and/or your car being locked. Perhaps you can explain this another way.

03-07-2019, 01:59 PM	#1
Josegut303 Enlisted Member 2 Rep 30 Posts Drives: 2011 Bmw 335i E90 N55 Join Date: Oct 2018 Location: Denver CO iTrader: (0)	Bmw 335i makes weird electrical buzzing static noise When i sit in my 335i after turning it off and locking the door about 2 minutes later i hear a strange buzzing staticy humming sound coming from the dash or around there also it 2 minutes after that tbe car sounds like it locks but i never press any buttons it does it on it's own. It makes the lock noise but the car stays locked
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03-07-2019, 02:12 PM	#2
b92 Major 540 Rep 1,040 Posts Drives: E92 335is, 6MT Join Date: Feb 2016 Location: Rhode Island iTrader: (2)	Sounds like the fuel pump, which is normal. Is it the same as the sound the car makes when you press the unlock button on your key fob? __________________ 2011 E92 335is, Space Grey/Coral Red, 6MT. RB 2+, Wedge tuned. E85 PI coming soon.
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03-07-2019, 03:54 PM	#3
Brandoch Lieutenant 481 Rep 478 Posts Drives: 2009 E93 M3 DCT Join Date: Dec 2017 Location: BC Canada iTrader: (0) Garage List 2009 BMW E93 M3 [9.50] 2011 BMW F25 X3 28i [8.50]	Its probably the ventilation motors resetting. Mines makes the same sound. It sounds like a semi truck horn about a block away.
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03-07-2019, 06:17 PM	#4
Josegut303 Enlisted Member 2 Rep 30 Posts Drives: 2011 Bmw 335i E90 N55 Join Date: Oct 2018 Location: Denver CO iTrader: (0)	Yes same sound but it does it on it's own
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03-07-2019, 06:32 PM	#5
Brandoch Lieutenant 481 Rep 478 Posts Drives: 2009 E93 M3 DCT Join Date: Dec 2017 Location: BC Canada iTrader: (0) Garage List 2009 BMW E93 M3 [9.50] 2011 BMW F25 X3 28i [8.50]	Yep, it does it on it's own. I believe its resetting to be ready for the next ignition cycle.
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03-07-2019, 07:23 PM	#6
mxchris727 Captain 193 Rep 666 Posts Drives: '03 M5, '06 325i, '12 M3 Join Date: Aug 2012 Location: Westport, CT iTrader: (0)	Is does it sound like my (still occurring) issue? https://www.e90post.com/forums/showthread.php?t=1348547 __________________ BMW GT1 (INPA, DIS, WinKFP, ect..), ISTA/P & /D is up and running! PM me if you want to stop by and code your car.
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03-07-2019, 11:26 PM	#8
e90yyc Art Collector 2427 Rep 3,450 Posts Drives: 2007 328xi (GM-delete 6MT) Join Date: Feb 2018 Location: Canada iTrader: (0)	If it’s the flaps moving in the HVAC system, they shouldn’t be making noise for two minutes. It’s normal for them to adjust shortly after you have shut off/locked your car, but that should last only about 20-30 seconds tops. Not following what you’re referring to about the locking sounds and/or your car being locked. Perhaps you can explain this another way. __________________ When I'm dead, just throw me in the trash.
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